The first thing you'll notice about this pdf is that it is gorgeous full-color and that it's extensively bookmarked, high hopes, so let's dive in.

The first page gives us an introduction to the concept of the fey as well as a table listing the quick-reference glyph system.
The fey herein are:
-Dullahan (CR 7): A fey take on the headless horseman, two additional stat-blocks are provided: 1 for the Dullahan Dreadknight (CR 9) and for their dark mares (CR 6). Their artwork kicks ass and is on par with what you can see in Paizo products.
-Erlking (CR 2): Kidnapper fey based on the ballad by Johann Wolfgang von Goethe, their artwork can be seen on the cover and, again, rocks! They have abilities to shroud themselves from sight and kidnap people. As a German who grew up learning the ballad by Goethe by hard, I love this hommage to the disturbing song.
-Fachen (CR 6): Strong, deformed soldiers of the Fey-lord Jack-in-Irons, I like how they got a weakness for adventurers to exploit: Fighting smart should be rewarded. They also get a CR 9 sorceror. Their artwork first threw me off, but after printing it out and taking it in, I've come to like it.
-Jack-in-Irons (CR 21): An extremely powerful fey king, broken and chained, Jack-in-Irons is interesting due to one fact: He fits nicely in with already established fey lore in your game. Due to e.g. Oberon already existing in my game, I can insert him nevertheless, as his portfolio does not conflict with Oberon's. On the downside, though, his AC is low for his CR and his artwork reminded me more of a giant than of a fey. It's still a good artwork, though.
-Kapre (CR 4): A kind of umanoid treant, this creatures make for interesting takes on the Green Man. Their artwork is nice.
-Nightshade Wisp (CR 3): Poisonous, revenge-seeking soldiers associated with the Nightshade plant. Nice artwork.
-Rarog (CR 13): Not actually a fey, but an elemental outsider, this fire/wind-aligned creature nevertheless makes for a great creature to associate e.g. with the scorching Sirocco. The artwork, again, rocks.
-Lean Sidhe (CR 7) & Bean Sidhe (CR 9): Beautiful, alluring emodiments of cathartic moments, the capricious Lean Sidhe may drain mortals of their creativity. Their dark sisters, the Bean Sidhe, born of grief and misery, get completely different abilities. Both share a beautiful artwork, though I would have liked to see a separate one for the Bean Sidhe.
-Spriggan (Cr 1/3): Ugly little creatures who worship Jack-in-Irons, their picture is actually the first picture of a Spriggan in any incarnation of the game I considered creepy. Well done! They come with information to make Spriggan characters yourself.
-Spring-heel Jack (CR 5): Urban, suave swashbucklers, their artwork is cool and could also be used for iconic Elven duelists. As a fan of urban settings, they'll see some use in my campaign.
-Sylph (CR 2): A cute, butterfly-winged fey, Sylphs actually get another great piece of artwork that makes them look not only cute but resolute at the same time.
-Vodnik (CR 3): An ugly little creature that drowns its victims and has some nice additional information (a mini-template) to make a variant bog-troll/vodnik hybrid.
-Yallery (CR 6): An embodiment of apathy and laziness, these urchin-like fey have some interesting abilities: Beggar's Idle lets them increase the duration of spell-like effects by 1d6 rounds on a successful attack. Nice.
After that, we get 2 pages containing both tips for the DM to properly play fey as well as a hook for a campaign centering on the new fey.
The final page features 5 new magic items.

Conclusion:
I've commented a lot on the artwork and rightly so - this book ranks among the most beautiful 3pp-books I've ever seen. Editing and formatting are top-notch and I didn't notice any mistakes. All of the fey are iconic and feature at least one signature ability that makes them stand out. I'm quite frankly at a loss to say anything negative about this book - the only true criticism I can provide is that a printer-friendly version would have been nice to have. Apart from that, I can only say: I want more! I love fey and this book actually gets them, resulting in a 5-star final verdict. Well done!

If there was a single word that I’d use to sum up the fey (in the context of a Pathfinder game, at least) it’d be “lame.” Other contenders for the top spot are “suckitude” “craptastic” and “eye-rollingly-boring.” After all, how many cool fey can you really think of? Sure, nymphs and dryads are nice eye-candy, but there aren’t any fey who could honestly be called badass; that distinction goes to the demons, the dragons, the undead, and pretty much every other monster type that isn’t fey.

It’s that perception that Allura Publishing apparently set out to combat with their second monster book – Fey Folio: Clans of the Fey. And if its use of the word twice in the title didn’t clue you in, this book is about fey monsters.

A twenty-seven page PDF, the book’s technical presentation lives up to the high standards that Alluria has set for itself. Full nested bookmarks are included, and everything is easily copied-and-pasted. The book has a table of monsters by Challenge Rating, and continues its use of their own set of symbols to indicate type, terrain, and environment.

Of course, I have to mention the artwork. Alluria’s emphasis on gorgeous interior illustrations is second-to-none among the third-party companies, and this book carries on that tradition. Even beyond the evocative cover, each monster has a full-color illustration from the inimitable Vasilis Zikos, which should tell you just how superb the art here is. Each page is also set on a slightly off-white background, which darkens to a parchment-color at the edges, making it look like the PDF is written on an old book. It’s a great way to color the background without drawing attention to it.

But enough with the technical commentary, what are the book’s monsters like? Well, of the thirteen monsters here, these aren’t your typical fey – or rather, they are. A significant number of these fey (maybe all of them, since I didn’t research the mythology) are taken from actual myths and legends – the dullahan, the erlking, the sylph, etc. Of course, the book doesn’t seem to feel constrained by these restrictions, as it paints a fairly interconnected backstory between various fey. For example, several fey are related through being former servants of the book’s big bad evil guy, the Jack-in-Irons. It’s an effective way to make these creatures seem like members of a society, instead of a group of individual monsters.

It should be noted that almost all of the fey here are meant for lower-level play. The book has a table breaking down the monsters herein by CR, and very few hit the double-digits.

Following this is a helpful, albeit brief, guide of things to keep in mind that make fey distinctive from other monsters. After that, a campaign overview is given, separated into three sections (low-level, mid-level, and high level) regarding the fey trying to free Jack-in-Irons while the PCs attempt to prevent it. A single page of new magic items rounds out the book.

Overall, I found myself surprised with just how good of a job this book did of making the fey seem not just interesting, but rather kickass. Both in terms of presentation and mechanics, most of these creatures seemed like a legitimate threat to any party that encounters them; even the ones that aren’t threatening seem that way by design, rather than a failure on Alluria’s part. I actually could see using these fey in my Pathfinder game, as challenging antagonists no less – that’s the highest compliment that I can give the Fey Folio: it makes the fey frightening again.

I've never been a large fan of fey creatures, largely because the treatment they get in the core fantasy books is often weak and without that specialness that attracts or appeals to many GMs. As a result, many publishers have brought out various books on the fey in an attempt to do them justice, and I have to say that Alluria Publishing's Fey Folio: Clans of the Fey is hands down the best treatment for fey I've yet seen on the market. This product shines - it's got fantastic production values, with mind-blowing art, and vivid and descriptive writing that leaps out of the page. But that's not all - the creativeness behind the design and implementation of the mechanics, and the unique and novel background material are top quality. I thoroughly enjoyed every aspect of this book - if you're looking for a book on fey creatures you can look no further than this product.

The product details 13 different kinds of fey, and gives them the royal treatment by allocating enough page space and descriptive/background material to make each creature unique. I was very impressed by the ingenuity and handling of the fey - as twisted and dark creatures that aren't entirely evil. The fey creatures just leap out of the page and scream to be used. The interaction and hierarchy between the fey creatures creates a novel and interesting culture of fey creatures, complete with the dark and malevolent lord of the Fey, Jack-In-Irons. The product even includes an interesting campaign that builds on the material presented, and one that I suspect many GMs will itch to run as is, or with some minor modification. I thought the special abilities and attacks that the fey creatures had were fabulous, really integrating neatly and elegantly with the fey creature's personality and background. On top of that, the product also includes a handful of fey related magical items. Overall, it's hard to beat a product like this - excellent all round.

This product is 27 pages long. Cover, credits and introduction takes up the first 5 pages.

Monsters section. (17 pages)
All have at least one full page devoted to them, a few have more. Each also has artwork.
Dullahan and horse – A headless, whip wielding dark fey. Stats for them, a Dark Mare mount, plus a variation Dullahan Deathknight.

Erkling – evil shadow fey that kindnap bad children. Which is how they make more of themselves. Very creepy and cool monster.

Fachen – A interesting violent fey, with a second set of stats for a sorcerer version.

Jack in Irons – supposedly the first fey and king of the fey.

Kapre – medium sized tree race of fey a little like treants.

Nightshade Wisp – elf like plant race that punishes those that defile the fey realm.

Rarog – fire elemental fey that are not native to the fey realm.

Sidhe – Two kinds lean and bean fey, Both female fey. Both feast on energy, the lean feast on creative energy while the bean on misery. Both act as muses so they can feast.

Spriggan – small savage evil fey, with stats for their use as a PC race.

Spring-Heel Jack – fey that prefer to live in mortal cities. Embodiments of mortal wanton appetites.

Sylph – related to pixies, sprites and brownies. They often like to play tricks and pranks.

Vodnik – evil aquatic fey that may or may not be related to gnomes. Half troll template as they breed with trolls sometimes.

Yallery – small lazy fey that prefer living in cities, terrified of dwarves. They seek to inspire lethargy in others.

GM's section. (2 pages)
With advice on how to play fey and some encounter idea's by level for fey.

Magic Item section (1 page)
In this section there is 5 new magic items.
Boots of Blazing Dervish – can make a wall of fire in a interesting way.
Dullahan Hide Armor – deals with fear, both protecting and causing it.
Sidhe Locket – social skill bonuses and lets the owner break out of enchantments.
Sprigganblood Crudgel – magic club that can at times be a reach weapon
Sylph's Sword – can cause sleep effect.

It finishes with a OGL and back cover. (2 pages)

Closing thoughts. The art work runs from good to top notch in this product. The monsters are interesting. If you are a fan of the dark fey and things like Grimms tales, this product will help bring that feel to your game. If you are looking for that or just some new interesting monsters then I highly recommend this product. The CR ranges from 1/3 to 21, with all but three of them being between 2-10 CR. Only one at 13 CR and one at 21 CR. I would like to see a follow up to this product, perhaps a part 2 with more fey and/or a fluff heavy book about the fey realm and more fluff about the creatures.

I did notice one thing odd that I am not sure if it was done on purpose or not. In the Vodnick section there is looks like there is drops or circles where the text is just a bit blurry, not enough where it is still not easy to read but enough to be very noticable. I am not sure if that is suppose to be drops of water on the page as they are aquatic fey or not. That appears to be the case and I think it was done on purpose but I am honestly not sure.

So whats my rating? Well I couldn't really find anything wrong, but to be fair I am not a huge number cruncher when it comes to stat blocks. As long as it looks like it will play well I am content. But I didn't notice any stat block errors either. My only real complaint is I wish they had had about half a page or more of fluff for each monster, I think that would have turned this from a great product to a fantastic one. So with the top notch art and interesting fey monsters and no real errors to speak of. I am giving it a 4.5 star review.

My wife was the person who turned me on to how cool fey can be. Before I assumed fey were dainty little creatures that danced and frolicked and through occasional bacchanals. I discovered that a good many are borderline psychotic creatures that should always rival the most devious in the D&D universe.

Alluria Publishing's Clans of the Fey, originally released as a 4th edition supplement, makes its way pathfinder. It is just as amazing, creative and vicious a bestiary as its counterpart. If you like fey or just want a different kind of creature, to mix it up with your PCs, the Fey Folio is hands down the best bestiary out there for the Pathfinder system.

The artwork, ingenuity and writing in the 27 page Fey Folio is top notch. So much so you would assume that Alluria was a big time publisher. Each of the 13 creatures given two to three pages to absolutely shine. I have seen a many fey renditions of creatures, none more explosive as the ones here. The artwork jumps off the pages, escapes the pages and smacks you into appreciation.

The writing is concise and descriptive. It gives a lot of credit to the fables and folklore these creatures are based on. The abilities really play off of the unpredictability that fey are known for.

For the Dungeon Master
My new favorite fey is the Jack-in-Irons. I once saw a rendition of it in another book, and it just felt like a giant with the fey descriptor. Fey Folio turns him into a god and a great antagonist for a campaign.

The Iron Word
If fey are going to make any appearance in your campaign, Fey Folio, Clans of the Fey is a great supplement to help fill in the gaps. More than just creature of the weeks, they can be used to really push a campaign world.

I have an abiding love for the world of the Fey. It's clear that Alluria Publishing share this love with me. They've spent a lot of effort to make a fantastic product.

Let's start with the content because, when it comes down to gaming, that's the most important part. The 13 Fey creatures presented here are well thought out, balanced and span a range from CR 1/3 to CR 21. They're well balanced and can offer a lot to a campaign, not just as threats but as creatures a party can interact with.

In addition to the Fey themselves, there are a number of interesting magic items that can fall into the hands of the party. Again, a balance is very well struck between interesting, functional and fun.

If that weren't enough to recommend this, let's move on to the layout. This 27 page document is absolutely beautiful. The layout is stunning, the artwork is professional quality and the document itself is done in a wonderful style.

Do I have any beefs at all? Surely this can't be a quintessential Pathfinder supplement? I did find one thing I did not enjoy, but it's a personal opinion of mine and shouldn't detract from the product as a whole. The font used to illustrate a creature name is damned hard to read. You can find the name in a variety of places though, including the actual stat block and this shouldn't deter anyone from purchasing and using the Clans of the Fey.